Question Problems with FPS in league of legends

[HelperinoPlserino]

Hello. This is my first thread here so excuse me if I post in wrong section or something.
I ve had a laptop for 3 years with an intel processor Intel Core i7-6700HQ 2.6GHz and a GPU NVIDIA 960M.
Recently I ve started to have problems in league of legends, FPS is at 90-100 but goes under 60 in teamfights (when a lot is happening on the screen). I ve always ran the game at max settings. The problem is things dont get better when I put the setting all the way down to verry low. I get 90-100 fps and drops under 60 in teamfights.
I checked the temeperature of the laptop and I usually get like 80 degrees celcius,which is on the high side,but considering it s a laptop not that high from what I read online.
Here is a list of things I have tried to solve the issue:
Reinstall Windows
Reinstall League
Reinstall Intel and NVDIA drivers
Opened the laptop to clear the dust(wasnt much) but I didnt apply thermal paste
Disabled full screen optimization
Run league as administrator
Close all other programs when I play it
Made a clean boot for the computer
Updated bios
Made sure all drivers are up to date
And I probably tried a few things more.
I would really apreciate your help,I really can t find the problem.
I know my laptop isnt exactly a powerfull machine but I don t think it should have problems with league of legends like it does.
Thank you for your time!

 

[iiSlashr]

The computer shouldn't have any problems, but those are outdated components. For a game like league, it really doesn't matter what FPS you get as long as it's above ~30-60. If your laptop is that old, it most likely has a 60hz display, which means you won't see a difference above 60fps.

 

[HelperinoPlserino]

Yes my display is 60hz. And it s true that I dont feeel difference between 90 fps and 70 fps. But like I said the problem is when it gets under 60 fps,to 40-50 for a few seconds and it s verry noticable. I tried vsync on,capping to 60 but I get fps drops even then.